Dr. Károly Hrotkó, Professor Emeritus, Hungarian University of Agriculture and Life Science, Budapest, Hungary. Doctor of Hungarian Academy of Sciences (DSc): 2004; PhD. 1989. M.Sc. 1977. Faculty of Horticulture, Budapest. Professional activities: 2021–Present: Professor Emeritus; 1999–2020: Professor; 2008–2016: Head of Dept. Floriculture and Dendrology; 2010–2014: Dean of the Faculty of Horticultural Science; 1999–2008: Professor, Dept. of Fruit Science, Faculty of Horticulture, Budapest; 1989–1999: Associate professor; 1990–1995 Vice dean of Faculty of Horticulture; 1978–1989: Assistant lecturer. Research activity and interests: biology of rootstock–scion interactions; breeding and evaluation of fruit tree rootstocks; propagation of woody plants; application of plant bioregulators in tree raising. Total papers published: 583, published in well-known periodicals and conference proceedings and books. Cumulated IF: 30,287; number of independent citations: 1613; H-index: 24; Six books, with 35 chapters published by Hungarian and foreign publishers (see: https://vm.mtmt.hu//search/slist.php?lang=0&AuthorID=10006121#). Membership: International Society for Horticultural Sciences (ISHS), Editorial Board of Acta Agriculturae Serbica, Klosterneuburger Mitteilungen, Austria, Journal of Pomology, Serbia, Cacak, Romanian Journal of Horticulture; Horticulture, MDPI Journals Basel, Switzerland. Languages: fluent in English, German, and Hungarian (native); basic Russian.